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import Beans.LoggedInBean;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;

/**
 *
 * @author sa11
 */
public class BloggInlagg extends HttpServlet {

    private String connURL = "jdbc:sqlserver://idasql-db.hb.se:56001;" + "databaseName=dbtht1117";///dbtht1117"; // ange databas namn här";
    private String userName = "dbtht1117";
    private String password = "panwer09";
    private int bloggID = 0; // hämta från cookie eller liknande

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here*/
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet BloggInlagg</title>");
            out.println("</head>");
            out.println("<body>");
            if (request.getParameter("bloggID") != null) {
                bloggID = Integer.parseInt(request.getParameter("bloggID"));
                outputBloggInlagg(out, bloggID);
            } else {
                outputBloggInlagg(out, 0);
            }
            /*
            out.println("<h1>Servlet BloggInlagg at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
            /**/
        } finally {
            
        }
    }

    private void outputBloggInlagg(PrintWriter out, int bloggID) {
        // driver and connection try catch
        Connection conn = null;
        Statement stmt = null;
        try {
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            conn = DriverManager.getConnection(connURL, userName, password);
            stmt = conn.createStatement();

            /*
            // test
            DatabaseMetaData md = conn.getMetaData();
            ResultSet rs = md.getTables(null, null, "%", null);
            out.println("<p>");
            while (rs.next()) {
            out.println(rs.getString(3));
            }
            out.println("</p>");
            /**/
            //stmt.executeUpdate("USE dbtht1117;");

            
            ResultSet rs = stmt.executeQuery("SELECT * FROM Blogg ORDER BY datum DESC;");
            while(rs.next() && bloggID == 0){
                bloggID = (Integer.parseInt(rs.getString("bloggID")));
                break;
            }
            rs = stmt.executeQuery("SELECT * FROM Blogg WHERE bloggID = " + bloggID + ";");

            if (rs.next()) {
                out.println("<h1>" + rs.getString("rubrik") + "</h1>");
                out.println("<p>" + rs.getString("bloggText") + "</p>");
                out.println("</p>" + rs.getString("datum") + "</p>");
                out.println("</p>" + rs.getString("anvandarID") + "</p>");
                out.println("<br />");
            }

            rs = stmt.executeQuery("SELECT * FROM Kommentar k JOIN Blogg b ON k.bloggID = b.bloggID AND k.bloggID = " + bloggID + ";");
            out.println("<table border = \"1\"><tr><td>");
            while (rs.next()) {
                out.println("<table border = '1'><tr><td><p>anvandare: " + rs.getString("anvandarID") + "</p></td>"
                        + "<td><p>" + rs.getString("kommentarsText") + "</p></td></tr>"
                        + "<tr><td><p>Datum:" + rs.getString("datum") + "</p></td></tr></table>");
                out.println("<br /><br /><br />");
            }
            /**/

            out.println("</td></tr>");
            /*TODO: se nedan */
            // nedanstående ska endast komma upp om man är inloggad, så man borde kunna skicka med 
            // användarnamn som ett hiddenfält också, blir visserligen lätt att fejka kommentarer
            // men det är en nödlösning om inte annat, verkar dock som om man inte får vissa användar id
            // så får väl kolla upp användar alias på användarID och skicka och skriva det
            LoggedInBean lib = LoggedInBean.getInstance();
            if (lib.getusername() != null) {
                out.println("<tr><td><form action = \"ProcessComment\" method = \"post\">"
                        + "<p> Kommentar: </p><input type = textbox name = \"kommentar\"></input><br/>"
                        + "<input type = \"hidden\" name = \"bloggID\" value = \"" + bloggID + "\">"
                        + "<input type = \"submit\" value = \"submit comment\"/>"
                        + "</form></td></tr></table>");
            }
            else{
                out.println("</table>");
            }

            /**/
        } catch (ClassNotFoundException ex) {
            out.println("error at driver");
        } catch (java.sql.SQLException ex) {
            out.println("error at initiateSQL");
        } finally {
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
        //(response.getWriter()).println("<html><head><title>unreachable</title></head><body><p>unreachable</p></body></html>");
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
